CN115050278B - Display screen and display device - Google Patents
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- CN115050278B CN115050278B CN202210678536.3A CN202210678536A CN115050278B CN 115050278 B CN115050278 B CN 115050278B CN 202210678536 A CN202210678536 A CN 202210678536A CN 115050278 B CN115050278 B CN 115050278B
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- 238000004804 winding Methods 0.000 claims abstract description 65
- 239000010410 layer Substances 0.000 claims description 413
- 230000003287 optical effect Effects 0.000 claims description 28
- 239000012790 adhesive layer Substances 0.000 claims description 27
- 239000003292 glue Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000010408 film Substances 0.000 description 162
- 238000000926 separation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
- G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The embodiment of the application provides a display screen and a display device, relates to the technical field of display, and is used for solving the technical problem that each film layer of the display screen is separated from each other due to relative sliding. The circumferential side surface of the display screen provided by the embodiment of the application is provided with a winding start side surface, a connecting side surface and a winding end side surface which are connected; the winding start side surface and the winding end side surface are oppositely arranged and extend along a first direction; the display screen comprises an elastic layer and a plurality of film layers which are sequentially laminated, wherein the elastic layer is positioned on the winding end side face and/or the connecting side face and is connected with at least two film layers which are arbitrarily adjacent to each other in the film layers. The display screen can reduce the relative sliding quantity between at least two adjacent film layers, further prevent the film layers of the display screen from being separated from each other, and ensure the display function of the display screen.
Description
Technical Field
The application relates to the technical field of display, in particular to a display screen and a display device.
Background
With the continuous development of display technology, higher demands are being made on display devices, which are required to be stored and carried conveniently, so that display devices with a curling function are receiving a great deal of attention. However, the conventional display device having the curling function has a certain disadvantage.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide a display screen and a display device, so as to solve the technical problem that the film layers of the display screen are easy to slide relatively to cause mutual separation.
In order to achieve the above object, the embodiment of the present application provides the following technical solutions:
the first aspect of the embodiment of the application provides a display screen, wherein the circumferential side surface of the display screen comprises a winding start side surface, a connection side surface and a winding end side surface which are connected; the winding start side surface is used for being connected with the scroll, and the winding start side surface and the winding end side surface are arranged oppositely and extend along a first direction; the display screen comprises an elastic layer and a plurality of film layers which are sequentially stacked, wherein the elastic layer is positioned on the winding end side face and/or the connecting side face and is connected with at least two film layers which are arbitrarily adjacent to each other in the film layers.
According to the display screen provided by the embodiment of the application, the elastic layer is arranged on the winding end side surface and/or the connecting side surface, and the elastic layer is connected with at least two film layers which are arbitrarily adjacent to each other in the plurality of film layers. When the display screen is in a winding state, the adjacent at least two film layers can relatively slide on the winding end side surface and the connecting side surface, and tension is applied to the elastic layer arranged on the winding end side surface and/or the connecting side surface, so that the elastic layer is deformed. Because the elastic layer is deformed, the elastic layer can apply restoring force opposite to the tensile force direction to at least two film layers connected with the elastic layer, so that the relative sliding quantity between the adjacent at least two film layers is reduced, the film layers of the display screen are prevented from being separated from each other, and the display function of the display screen is ensured.
In one possible implementation manner, the display screen has a light emitting side, and a normal direction of the light emitting side is a second direction; and the uppermost film layer of the plurality of film layers is a first film layer along the second direction, and the first film layer and at least one film layer positioned below the first film layer are connected with the elastic layer.
Since the distance between the first film layer and the axis of the scroll is the largest, the winding radius of the first film layer is the largest, that is, the offset of the first film layer is the largest when the display screen is in a winding state. By the arrangement, the offset of the film layer with the largest offset can be reduced, and the effect of reducing the offset between the film layers is ensured.
In one possible implementation, the elastic layer is connected to at least three film layers that are sequentially adjacent to each other among the plurality of film layers.
By the arrangement, the number of the film layers connected with the elastic layer can be increased, so that the offset between the film layers in the display screen is further reduced.
In one possible implementation manner, the display screen has a light emitting side, and a normal direction of the light emitting side is a second direction; along the second direction, the film layer positioned at the uppermost part of the plurality of film layers is a first film layer, and the film layer positioned at the lowermost part is a second film layer; the connecting side surface of the first film layer is provided with a first extension part extending along a first direction; the connecting side surface of the second film layer is provided with a second extension part extending along the first direction; the second extension part, the connecting side surfaces of the other film layers between the first film layer and the second film layer, the first extension part and the surrounding part form a first accommodating groove, and the elastic layer is filled in the first accommodating groove.
The elastic layer is filled in the plurality of film layers, and a fixing structure of the elastic layer is not needed, so that convenience in arranging the elastic layer is improved; meanwhile, the plurality of film layers can provide protection effect for the elastic layer, and separation between the elastic layer and the plurality of film layers is prevented.
In one possible implementation, the length of the first extension is equal to the length of the second extension along the first direction.
By the arrangement, the elastic layers can be arranged inside the film layers and completely cover the elastic layers, the elastic layers cannot influence the appearance of the display screen, and the installation structure matched with the display screen does not need to be changed in the process of assembling the display device, so that the universality of the display screen of the embodiment of the application is improved.
In one possible implementation manner, the elastic layer is connected with at least five sequentially adjacent film layers, a film layer which is spaced from the first film layer and the second film layer is a third film layer, and a third extension part extending along the first direction is arranged on the connecting side surface of the third film layer; the length of the third extension part is smaller than the length of the first extension part and smaller than the length of the second extension part along the first direction.
So set up, upper surface, lower surface and the connection side of third extension all can be connected with the elastic layer, increased the area of connection with between the elastic layer to improved the adhesion between third rete and the elastic layer, prevented that elastic layer and rete from taking place to break away from.
In one possible implementation manner, the display screen has a light emitting side, and a normal direction of the light emitting side is a second direction; along the second direction, the film layer positioned at the uppermost part of the plurality of film layers is a first film layer, and the film layer positioned at the lowermost part is a second film layer; a fourth extension part along a third direction is arranged on the winding end side surface of the first film layer, and the third direction is perpendicular to the first direction and the second direction; a fifth extension part extending along the third direction is arranged on the winding end side surface of the second film layer; the fifth extension part, the winding end side surface of the other film layers positioned between the first film layer and the second film layer and the fourth extension part are enclosed to form a second accommodating groove, and the elastic layer is filled in the second accommodating groove.
The elastic layer is arranged in the second accommodating groove, and the elastic layer is arranged in the second accommodating groove; meanwhile, the plurality of film layers can provide protection for the elastic layer, and separation between the elastic layer and the plurality of film layers can be prevented.
In one possible implementation, the length of the fourth extension is smaller than the length of the fifth extension in the third direction.
Since the length of the fourth extension is smaller than that of the fifth extension, the length of the elastic layer connected to the winding-end side of the first film layer is longer than that of the elastic layer connected to the winding-end side of the second film layer in the third direction. The elastic layer is capable of applying a greater restoring force to the first film layer than the second film layer, thereby reducing the amount of slippage of the first film layer.
In one possible implementation, the winding end sides of the other film layers located between the first film layer and the second film layer are arranged in a stepwise manner along the second direction.
Because the length of other retes between first rete and the second rete along the third direction reduces gradually, the length of the elastic layer who is connected with the coiling of other retes ends the side increases in proper order for the restoring force that the elastic layer can be applyed to other retes also increases in proper order along the second direction, thereby can reduce and balance the slippage between other retes, prevent the rete mutual separation of display screen, guarantee the display function of display screen.
In one possible implementation, the material of the elastic layer includes an ultraviolet curable glue or a thermosetting glue.
In one possible implementation manner, the display screen includes a supporting layer, a display panel, a polarizing layer, an optical adhesive layer and a cover plate layer which are sequentially stacked; the cover plate layer is a first film layer, and the supporting layer is a second film layer.
A second aspect of the embodiment of the present application provides a display device, including a reel and a display screen as described in any one of the foregoing aspects; when the display device is in a curled state, the display screen is wound on the scroll.
The display device according to the embodiment of the present application, because of including any one of the display screens described above, includes the advantages of any one of the display screens described above, and the embodiment of the present application will not be described again.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the application;
FIG. 2 is a schematic diagram of the display screen in FIG. 1;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a cross-sectional view of A-A in some implementations of embodiments of the application;
FIG. 5 is a cross-sectional view of A-A in other implementations of embodiments of the application;
FIG. 6 is a cross-sectional view of A-A in other implementations of embodiments of the application;
FIG. 7 is a cross-sectional view of A-A in other implementations of embodiments of the application;
fig. 8 is a cross-sectional view of B-B of fig. 2.
Reference numerals illustrate:
10. a display screen;
20. a reel;
100. an elastic layer;
110. a winding start side;
120. a winding end side surface;
121. a second accommodation groove;
130. a connecting side surface;
131. a first accommodation groove;
140. a light-emitting side;
150. a support layer;
160. a display panel;
170. a polarizing layer;
180. an optical adhesive layer;
190. a cover sheet layer;
C. a first extension;
D. a second extension;
E. a third extension;
F. a fourth extension;
G. and a fifth extension.
Detailed Description
As a result of long-term studies by the inventors, it has been found that in the related art, a display device generally includes a reel and a display screen, one end of the display screen is connected to the reel, and at least a part of the display screen is wound around the reel. The display screen comprises a plurality of film layers which are sequentially stacked. When the display device is in a curled state, namely the display screen is wound on the scroll, the problem of relative sliding is generated among the film layers of the display screen, and the main generation reason is that the film layers of the display screen are sequentially stacked on the outer circumferential surface of the scroll along the direction away from the axis of the scroll, the distance between the film layers and the axis of the scroll is different, and the winding radius of the film layers is different, so that the relative sliding is generated among the film layers, and the film layers in the display screen are mutually separated to influence the display function of the display screen.
According to the display screen provided by the embodiment of the application, the elastic layer is arranged on the winding end side surface and/or the connecting side surface of the display screen, and at least two arbitrarily adjacent film layers in the plurality of film layers of the display screen are connected with the elastic layer so as to reduce the slippage between the film layers, thereby preventing the film layers from being separated from each other and ensuring the display function of the display screen.
In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the dimensions and shapes of the figures in the drawings do not reflect true proportions, and are intended to illustrate only the embodiments of the present application. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.
Referring to fig. 1, a display device of an embodiment of the present application includes a display screen 10 and a scroll 20. The peripheral sides of the display 10 include a winding start side 110 and a winding end side 120 which are disposed opposite to each other, and the winding start side 110 is connected to the reel 20. The reel 20 is used to wind the display screen 10.
The display device has a first state and a second state. When the display device is in the first state, the display screen 10 is in the unfolded state, i.e. the display screen 10 is unfolded into a plane. According to the orientation shown in fig. 1, for example, when the reel 20 rotates clockwise, the display screen 10 wound on the reel 20 is gradually unwound into a flat surface. When the display device is in the second state, the display screen 10 is in a winding state, that is, the display screen 10 is wound on the reel 20. According to the orientation shown in fig. 1, for example, when the reel 20 rotates counterclockwise, the display screen 10 which is spread out to be flat is wound on the reel 20. The display screen 10 in the curled state can reduce the volume of the display device, so that the display device is convenient to store and carry.
Referring to fig. 2, the circumferential side of the display screen 10 includes a winding start side 110, a connection side 130, and a winding end side 120 that are connected, and the winding start side 110 and the winding end side 120 are disposed opposite to each other and each extend in a first direction x.
The connection side 130 connects the winding start side 110 and the winding end side 120. Illustratively, when the display screen 10 is in the unfolded state, the connecting side 130 extends along a third direction y, which is perpendicular to the first direction x and parallel to the plane of the display screen 10.
The display screen 10 further has a light emitting side 140 facing away from the scroll 20, and a normal direction of the light emitting side 140 is a second direction z, which is perpendicular to the first direction x and the third direction y.
Referring to fig. 3, the display screen 10 includes a plurality of film layers stacked in order. Illustratively, the plurality of film layers may be a support layer 150, a display panel 160, a polarizing layer 170, an optical adhesive layer 180, and a cover plate layer 190, respectively.
The support layer 150 is used to provide support for other layers of the display screen 10.
The display panel 160 is used to display an image. The display panel 160 may be an Organic Light-Emitting Diode (OLED) display panel, for example. The OLED display panel may include an array substrate, a light emitting layer, and a package layer sequentially stacked. The array substrate is internally provided with a plurality of thin film transistors which are arranged in a matrix. The light-emitting layer is arranged on the array substrate and is provided with a plurality of light-emitting units which are arranged in a matrix, and the light-emitting unit array is correspondingly arranged with the thin film transistor array and is electrically connected with the thin film transistor array so as to control the light-emitting units through the thin film transistors. The packaging layer is arranged on the light-emitting layer and used for packaging the light-emitting layer so as to prevent external moisture, oxygen and the like from entering the light-emitting layer to influence the display performance of the OLED display panel. It can be understood that the display panel may be other types of display panels, which are not described in detail in the embodiments of the present application.
The display panel 160 is provided with a polarizing layer 170 for reducing ambient light reflected by the display panel 160 to improve a display effect of the display panel 160.
The polarizing layer 170 is provided with an optical adhesive layer 180 and a cover plate layer 190, and the optical adhesive layer 180 is located between the polarizing layer 170 and the cover plate layer 190 and is used for bonding the polarizing layer 170 and the cover plate layer 190. The cover sheet layer 190 serves to protect the polarizing layer 170 and the display panel 160. It can be appreciated that the multiple film layers of the display screen 10 may also include other film layers, which are not described in detail in the embodiments of the present application.
The display 10 further includes an elastic layer 100, where the elastic layer 100 is located on the winding-end side 120 and/or the connection side 130 and is connected to at least two film layers that are arbitrarily adjacent to each other among the plurality of film layers.
In the display screen 10 according to the embodiment of the present application, the elastic layer 100 is disposed on the winding end side 120 and/or the connection side 130, and the elastic layer 100 is connected to at least two film layers arbitrarily adjacent to each other among the plurality of film layers. When the display screen 10 is in the rolled state, at least two adjacent film layers will slide relatively on the rolling end side 120 and the connecting side 130, and a tensile force is applied to the elastic layer 100 disposed on the rolling end side 120 and/or the connecting side 130, so that the elastic layer 100 is deformed. Because the elastic layer 100 deforms, the elastic layer 100 applies a restoring force opposite to the tensile force to at least two film layers connected with the elastic layer 100, so that the relative sliding amount between the adjacent at least two film layers is reduced, the film layers of the display screen 10 are prevented from being separated from each other, and the display function of the display screen 10 is ensured.
Illustratively, the material of the elastic layer 100 may be an ultraviolet curable glue or a thermosetting glue. It is understood that the elastic layer 100 may be made of other elastic materials, which will not be described in detail in the embodiments of the present application.
The elastic layer 100 is connected to at least two film layers that are arbitrarily adjacent to each other among the plurality of film layers. The adjacent at least two film layers may be two adjacent film layers, or three or more film layers which are adjacent in sequence. Any adjacent at least two film layers means that the adjacent at least two film layers can be located at any position in the plurality of film layers.
The following describes the technical solution of the embodiment of the present application by taking the display 10 including the supporting layer 150, the display panel 160, the polarizing layer 170, the optical adhesive layer 180 and the cover layer 190 stacked in order as an example.
The elastic layer 100 may be disposed on the connection side 130. The number of the plurality of film layers connected to the elastic layer 100 may be two. Illustratively, referring to fig. 3, the elastic layer 100 is positioned at the connection side 130, and the elastic layer 100 may be connected with the support layer 150 and the display panel 160. It is understood that the elastic layer 100 may be connected to the display panel 160 and the polarizing layer 170 (not shown in the drawings), and the elastic layer 100 may be connected to the polarizing layer 170 and the optical adhesive layer 180 (not shown in the drawings).
Referring to fig. 4, the elastic layer 100 may also be coupled with the optical cement layer 180 and the cover plate layer 190. In the second direction z, the cover layer 190 is uppermost, and the distance between the cover layer 190 and the axis of the spool 20 is maximized. When the display screen 10 is in the curled state, the winding radius of the cover plate layer 190 is maximum, that is, the offset of the cover plate layer 190 is maximum. The cover plate layer 190 and the optical adhesive layer 180 adjacent to the cover plate layer 190 are both connected with the elastic layer 100, and the offset of the film layer with the largest offset can be reduced so as to ensure the effect of reducing the offset between the film layers.
The number of layers of the plurality of layers connected to the elastic layer 100 may also be at least three. Illustratively, referring to fig. 5, the elastic layer 100 may be coupled with the polarizing layer 170, the optical adhesive layer 180, and the cover plate layer 190. It is understood that the elastic layer 100 may be further connected to the support layer 150, the display panel 160 and the polarizing layer 170 (not shown in the drawings), and the elastic layer 100 may be further connected to the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 (not shown in the drawings).
In an embodiment, along the second direction z, the uppermost film layer of the plurality of film layers is a first film layer, and the first film layer and at least one film layer below the first film layer are both connected to the elastic layer 100, that is, the cover plate layer 190 and at least one film layer below the cover plate layer 190 are both connected to the elastic layer 100.
When the number of the film layers connected to the elastic layer 100 is at least three, the uppermost film layer of the plurality of film layers is the first film layer, and the lowermost film layer is the second film layer along the second direction z. The connecting side surface of the first film layer is provided with a first extension part extending along a first direction. The connecting side surface of the second film layer is provided with a second extension part extending along the first direction. The second extension part, the connection side surfaces of the other film layers between the first film layer and the second film layer, the first extension part and the surrounding are formed into a first accommodating groove, and the elastic layer 100 is filled in the first accommodating groove. It should be noted that, in the embodiment of the present application, the extension along the first direction may be a forward extension along the first direction or a reverse extension along the first direction. That is, both connecting sides of the first film layer may be provided with the first extension portion, and both connecting sides of the second film layer may be provided with the second extension portion. The embodiment of the application is described by taking the forward extension of the first extension part and the second extension part along the first direction as an example.
Illustratively, referring to fig. 6, the elastic layer 100 is coupled with the polarizing layer 170, the optical adhesive layer 180, and the cover layer 190. The cover sheet layer 190 is a first film layer, and the connection side surface of the cover sheet layer 190 is provided with a first extension portion C, and the first extension portion C extends along the first direction x. The polarizing layer 170 is a second film layer, and a second extension portion D is disposed on a connection side of the polarizing layer 170, and extends along the first direction x. The first extension portion C, the connection side surface of the optical adhesive layer 180, and the second extension portion D are enclosed to form a first accommodating groove 131, and the elastic layer 100 is filled in the first accommodating groove 131. The plurality of film layers connected with the elastic layer 100 form the first accommodating groove 131 for accommodating the elastic layer 100, and the elastic layer 100 can be filled in the plurality of film layers without setting a fixing structure of the elastic layer 100, thereby improving convenience in setting the elastic layer 100; meanwhile, the plurality of film layers can provide protection for the elastic layer 100, so as to prevent the elastic layer 100 from separating from the plurality of film layers.
For example, referring to fig. 6, the length of the first extension portion C may be equal to the length of the second extension portion D along the first direction x, so that the elastic layer 100 is located inside the plurality of film layers and the plurality of film layers completely cover the elastic layer 100, and the elastic layer 100 does not affect the appearance of the display screen 10, and in the process of assembling the display device, the mounting structure matched with the display screen 10 does not need to be changed, thereby improving the versatility of the display screen according to the embodiment of the present application.
The elastic layer 100 may also be connected to at least five of the plurality of film layers that are adjacent. And the film layers which are spaced from the first film layer and the second film layer in the at least five film layers are third film layers. The connection side of the third film layer is provided with a third extension portion extending along the first direction to increase the connection area with the elastic layer 100, thereby increasing the adhesion between the third film layer and the elastic layer 100 and preventing the elastic layer 100 and the third film layer from being separated from each other.
Illustratively, referring to fig. 7, the elastic layer 100 is connected to the support layer 150, the display panel 160, the polarizing layer 170, the optical adhesive layer 180, and the cover plate layer 190. The polarizing layer 170 is a third film layer, and a third extension portion E is disposed on a connection side of the polarizing layer 170, and extends along the first direction x. The upper surface, the lower surface and the connection side of the third extension portion E can be connected with the elastic layer 100, so that the connection area between the third extension portion E and the elastic layer 100 is increased, and the adhesion between the polarizing layer 170, i.e., the third film layer, and the elastic layer 100 is prevented from being separated from the film layer.
Illustratively, along the first direction x, the length of the third extension portion E is smaller than the length of the first extension portion C and smaller than the length of the second extension portion D, so that the third extension portion E can be located inside the first accommodating groove 131, and the third extension portion E does not affect the appearance of the display screen 10, and in the process of assembling the display device, a mounting structure matched with the display screen 10 does not need to be changed, thereby improving the versatility of the display screen according to the embodiment of the present application.
The elastic layer 100 may be provided on the winding end side 120. When the elastic layer 100 is disposed on the winding end side 120, the number of adjacent film layers connected to the elastic layer 100 and the positions of the adjacent film layers in the plurality of film layers can be referred to the above description of the elastic layer 100 disposed on the connection side 130, which is not repeated in the embodiments of the present application.
When there are at least three film layers connected to the elastic layer 100, the winding end side 120 of the first film layer has a fourth extension in the third direction y. The winding end side of the second film layer has a fifth extension extending in the second direction y. The fifth extension portion, the winding end side surface of the other film layers between the first film layer and the second film layer, and the fourth extension portion enclose a second accommodating groove, and the elastic layer 100 is filled in the second accommodating groove.
Illustratively, referring to fig. 8, the elastic layer 100 is coupled with the support layer 150, the display panel 160, the polarizing layer 170, the optical adhesive layer 180, and the cover layer 190. The cover sheet layer 190 is a first film layer, and a winding end side surface of the cover sheet layer 190 is provided with a fourth extension portion F, and the fourth extension portion F extends in the third direction y. The support layer 150 is a second film layer, and a fifth extension portion G is disposed on a winding end side of the support layer 150, and extends along the third direction y. The fifth extension G, the winding end side of the display panel 160, the winding end side of the polarizing layer 170, the winding end side of the optical adhesive layer 180, and the fourth extension F are surrounded to form a second accommodating groove 121, and the elastic layer 100 is filled in the second accommodating groove 121. The plurality of film layers connected with the elastic layer 100 are surrounded to form a second accommodating groove 121 for accommodating the elastic layer 100, and the elastic layer 100 is positioned inside the plurality of film layers, so that a fixing structure of the elastic layer 100 is not required, and the convenience of arranging the elastic layer 100 is improved; meanwhile, the plurality of film layers can provide protection for the elastic layer 100, and separation between the elastic layer 100 and the plurality of film layers can be prevented.
Illustratively, referring to fig. 8, in the third direction y, the length of the fourth extension F is less than the length of the fifth extension G. Since the cover sheet layer 190, i.e., the first film layer, is positioned above the support layer 150, i.e., the second film layer, the distance between the cover sheet layer 190 and the axis of the roll 20 is greater than the distance between the support layer 150 and the roll 20, and the winding radius of the cover sheet layer 190 is greater than the winding radius of the support layer 150 when the display screen 10 is in the wound state, the amount of slip of the cover sheet layer 190 is greater than the amount of slip of the support layer 150. Accordingly, in the third direction y, the slip amount of the winding end side surface of the cap layer 190 is larger than the slip amount of the winding end side surface of the support layer 150. Since the length of the fourth extension F is smaller than that of the fifth extension G, the length of the elastic layer 100 connected to the winding-end side of the cap layer 190 is greater than that of the elastic layer 100 connected to the winding-end side of the support layer 150 in the third direction y. The elastic layer 100 can apply a greater restoring force to the cover plate layer 190 than the support layer 150, thereby reducing the amount of slippage of the cover plate layer 190.
The winding end sides of the other film layers located between the first film layer and the second film layer may be arranged stepwise along the third direction y. Illustratively, referring to fig. 8, the display panel 160, the polarizing layer 170, and the optical adhesive layer 180 are positioned between the cover sheet layer 190 and the support layer 150, and the winding end sides of the display panel 160, the polarizing layer 170, and the optical adhesive layer 180 are arranged in a stepwise manner along the second direction z. That is, at the winding end side 120, the lengths of the display panel 160, the polarizing layer 170, and the optical adhesive layer 180 in the third direction y gradually decrease.
Since the display panel 160, the polarizing layer 170, and the optical adhesive layer 180 are sequentially stacked in the second direction z, the distances between the display panel 160, the polarizing layer 170, and the optical adhesive layer 180 and the axis of the roll 20 sequentially increase. When the display screen 10 is in the wound state, the winding radius of the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 increases sequentially, and the amount of slippage of the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 increases sequentially. Since the lengths of the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 along the third direction y are gradually reduced, the lengths of the elastic layer 100 connected with the sides of the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 are sequentially increased, so that the restoring force which can be applied to the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 by the elastic layer 100 is also sequentially increased, the slippage between the display panel 160, the polarizing layer 170 and the optical adhesive layer 180 can be reduced and balanced, the film layers of the display screen 10 are prevented from being separated from each other, and the display function of the display screen is ensured.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (8)
1. A display screen, characterized in that the peripheral side of the display screen comprises a winding start side, a connection side and a winding end side which are connected; the winding start side surface is used for being connected with the scroll, and the winding end side surface and the winding start side surface are oppositely arranged and extend along a first direction;
the display screen comprises an elastic layer and a plurality of film layers which are sequentially stacked, wherein the elastic layer is positioned on the winding end side face and the connecting side face and is connected with at least five film layers which are sequentially adjacent to each other in the film layers;
the display screen is provided with a light emitting side, and the normal direction of the light emitting side is a second direction; along the second direction, the film layer positioned at the uppermost position of the at least five film layers is a first film layer, the film layer positioned at the lowermost position is a second film layer, and the film layers which are spaced from the first film layer and the second film layer are third film layers;
the connecting side surface of the first film layer is provided with a first extension part extending along a first direction; the connecting side surface of the second film layer is provided with a second extension part extending along the first direction; the second extension part, the connecting side surfaces of the other film layers between the first film layer and the second film layer and the first extension part are enclosed to form a first accommodating groove, and the elastic layer is filled in the first accommodating groove;
the connecting side surface of the third film layer is provided with a third extension part extending along the first direction; the length of the third extension part is smaller than the length of the first extension part and smaller than the length of the second extension part along the first direction.
2. The display screen of claim 1, wherein a length of the first extension is equal to a length of the second extension along the first direction.
3. The display screen of claim 1, wherein the display screen has a light-exiting side, a normal direction of the light-exiting side being a second direction; along the second direction, the film layer positioned at the uppermost part of the plurality of film layers is a first film layer, and the film layer positioned at the lowermost part is a second film layer;
a fourth extension part along a third direction is arranged on the winding end side surface of the first film layer, and the third direction is perpendicular to the first direction and the second direction; a fifth extension part extending along the third direction is arranged on the winding end side surface of the second film layer; the fifth extension part, the winding end side surface of the other film layers positioned between the first film layer and the second film layer and the fourth extension part are enclosed to form a second accommodating groove, and the elastic layer is filled in the second accommodating groove.
4. A display screen according to claim 3, wherein the length of the fourth extension is less than the length of the fifth extension in the third direction.
5. The display screen of claim 4, wherein the winding end sides of the other film layers located between the first film layer and the second film layer are arranged stepwise along the second direction.
6. The display screen of any one of claims 1-5, wherein the material of the elastic layer comprises an ultraviolet curable glue or a heat curable glue.
7. The display screen of any one of claims 1-5, wherein the display screen comprises a support layer, a display panel, a polarizing layer, an optical adhesive layer, and a cover sheet layer, which are sequentially stacked; the cover plate layer is a first film layer, and the supporting layer is a second film layer.
8. A display device comprising a reel and a display screen as claimed in any one of claims 1 to 7; when the display device is in a curled state, the display screen is wound on the scroll.
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